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Featured researches published by Ken-ichi Uzaki.


Journal of Japan Society of Civil Engineers | 2012

The Tsunami Hazard in Coastal Zones of Ibaraki Prefecture based on an Numerical Simulation of the Tsunami due to The 2011 off the Pacific coast of Tohoku Earthquake

Hisamichi Nobuoka; Ken-ichi Uzaki; Hiroki Itho; Takumu Tsuboi

平成23年(2011年)東北地方太平洋沖地震(以下,東 北地方太平洋沖地震と呼ぶ)により発生した津波は広域 で,その高さが10mを越える巨大なものであったととも に大規模な浸水被害をひきおこした.茨城県沿岸におけ る津波高は遡上高を含め4~10 m程度(たとえば,信岡 ら,2011)であり広域性が始まるところであったと言え る(東北地方太平洋沖地震津波合同調査グループ,2011). 過去の記録がある中で,茨城県に来襲し最大の浸水を 引き起こした津波は1677年の延宝地震津波と考えられる が,その記録は断片的な状況のみにとどまっている.ま た同県の東北地方太平洋沖地震による津波以前で,記録 がまとまっている中で最も浸水域が広かった津波は1960 年のチリ沖地震津波と言えるが,その津波高は3 m 程度 (渡辺,1998)でとどまった.したがって茨城県では防災 や減災のために,沿岸平均で5 m程の既往最高の津波を 上回る津波を想定津波に設定することは容易ではない. そこで本研究の目的は2つの点を取り,広域性が始まる 茨城県沿岸に来襲した津波を数値再現することからその 来襲過程を明らかにすること,また減災対策のための津 波ハザードとして感度分析的に津波波源を様々に変えた 数値計算を行い,既往最高を上回る想定津波の設定に繋 げるための情報を蓄積することとした. 2. 計算方法と条件


Journal of Japan Society of Civil Engineers | 2011

Tsunami Disaster in North Part of Ibaraki Prefecture due to the 2011 Tohoku Pacific Ocean Earthquake

Nobuoka; Ken-ichi Uzaki; Takeo Matsu-Ura; Yasunori Nabetani


Journal of Japan Society of Civil Engineers | 2018

REGIONAL SEDIMENT TRANSPORT FROM YAMAKUNI RIVER TO NAKATSU INTERTIDAL FLAT AND THE INVESTIGATION OF MECHANISM OF EROSION/DEPOSITION OF THE FLAT

Ken-ichi Uzaki; Shiori Okuma; Akira Kuramochi; Akira Tai; Yoshito Ikehata


Journal of Japan Society of Civil Engineers | 2016

A STUDY ON THE ESTIMATION OF SEDIMENT DISCHARGE FROM THE NAKA RIVER INCLUDING THE FLOOD AND THE FOREASTING OF A REGIONAL SEDIMENT MOVEMENT OF THE KASHIMA-NADA SEA

Ken-ichi Uzaki; Makoto Takahashi; Yusei Takeda


Journal of Japan Society of Civil Engineers | 2016

A STUDY ON THE ESTIMATION OF h-Q EQUATION AT THE RIVER TIDAL AREA

Ken-ichi Uzaki; Hideyuki Koyauchi


Journal of Japan Society of Civil Engineers | 2014

Study on the establishment of estimation method of total sediment discharge from the Naka River by direct observations

Ken-ichi Uzaki; Yosuke Araki; Yusuke Watanuki; Makoto Takahashi


Journal of Japan Society of Civil Engineers | 2013

FIELD OBSERVATION OF WIND-DRIVEN CURRENTS ACCOMPANIED WITH SECONDARY CIRCULATIONS AND THE THERMAL STRUCTURE OF THE LAKE.

Ken-ichi Uzaki; Yosuke Araki; Shinya Horiguchi; Tatsuya Amagasa; Yusuke Toya; Wataru Yamada


Journal of Japan Society of Civil Engineers | 2012

FIELD OBSERVATIONS ON THE THREE-DIMENSIONAL STRUCTURE OF WIND-DRIVEN CURRENTS WITH SECONDARY CIRCULATIONS

Kouji Ide; Seiya Honma; Yousuke Araki; Masaya Horiguchi; Ken-ichi Uzaki


Coastal Engineering Proceedings | 2012

THREE‐DIMENSIONAL STRUCTURE OF WIND‐DRIVEN CURRENTS ACCOMPANIED WITH SECONDARY CIRCULATIONS AND THEIR EFFECTS ON THE THERMAL STRUCTURE OF LAKES AND OCEANS

Ken-ichi Uzaki; Koji Ide; Yosuke Araki; Shinya Horiguchi


Journal of Japan Society of Civil Engineers | 2011

Field Measurement of Suspended Sediment Size Distribution

Yoshiaki Kuriyama; Takayuki Suzuki; Shin-ichi Yanagishima; Ken-ichi Uzaki; Yoshio Ishino; Hikari Sakamoto

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Yoshiaki Kuriyama

Ontario Ministry of Transportation

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Takayuki Suzuki

Yokohama National University

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